Web cutting and associating means for printing machines



A. M. ZUCKERMAN WEB CUTTING AND ASSOCIATING MEANS FOR PRINTING MACHINES May 2, 1950 Filed Feb. 15, 1945 5 Sheets-Sheet l INVENTOR.

a Quay.

y 0 A. M. ZUCKERMAN 2,506,053

WEB CUTTING AND ASSOCIATING MEANS FOR PRINTING MACHINES 3 Sheets-Sheet 2 Filed Feb. 15, 1945 INVENTOR.

Patented May 2, 1950 srArss PATEN rrlC WEB CUTTING AND ASSOCIA'IING MEdNS FDR PRENTING MACHINES Adolph M. Zuelrerman,

to R. Hoe & (70.,

New York, N. Y., assignor 1 Claim.

The present invention relates to web printing machines, and more particularly to machines in which one or more webs are printed, then slit into a plurality of ribbons that are turned and associated in face to face relation, and then forwarded to a cutting and folding mechanism, which delivers the products in the form of signatures.

An object of the invention is to provide means whereby each oi the ribbons will be so guided to the associating mechanism, that the printing thereon will be in accurate register, transversely of the running ribbon, with the printing on other ribbons associated therewith.

@ther objects of the invention will be apparent from the following description and claim.

A preferred embodiment of the invention is illustrated in the accompanying drawings, wherein:

Figure 1 is a diagrammatic elevational side "view of a printing machine showing turning bar and folding mechanisms, associated therewith;

Figure 2 is a diagrammatic end view of the mechanism shown in Figure l as viewed in the direction of the arrow 2, of Figure 1, some of the parts shown in Figure 1 being omitted;

Figure 3 is an enlarged diagrammatic view partly in perspective of a portion of the mechanism shown in Figures 1 and 2, and showing a schematic wiring diagram;

Figure 4 is a plan view of a portion of the mechanism shown in Figure 2; and

Figure 5 is a section as viewed along the broken line 5-5 of Figure 4, as seen in the direction of arrow 5.

A printing machine is herein shown having a plurality of printing couples each provided with an impression cylinder H, (Figure l) a printing or plate cylinder !2, and an inking mechanism 13, which coact to perfect a web W as it passes through the printing couples. Thereafter the web is carried over guide rollers l4 to a web slitting mechanism having a plurality of slitting knives I6, cooperating with a slitting roller IT. The slitting roller I1 is journaled in frame members l8 and I9, (Figure 4) and carries a bevel gear 2|, that meshes with a bevel gear 22 secured to a shaft 23 driven in a known manner Inc New York, N. Y., a coris in mesh with a gear 32 secured to the shaft of the roller ll, and the slitting knives l5 are thus rotated to slit the web W into a plurality of ribbons R6, and it will be understood that presser rollers (not shown) may be used to press the ribbons into firm contact with the roller ii.

A turning bar is positioned to change "the direction of movement of each ribbon RI R2, R3 and R4 to a direction approximately 90 degrees from its direction in moving from the slitter, and to position the ribbons so they are brought into face to face relationship. Preferably all of the turning bars 36 and associated mechanisms are identical, and one end of each turning bar 35 is rigidly secured to a bracket 3'! by a bolt 38, while the other end of each turning bar is rigidly secured to a bracket Si by a bolt 52. A channel portion 39 (Figure 5) of each bracket 3'! rests on the top of a cross member 4!, and the bracket is held to limited motion on the member 4| by a bolt 42 passing through a slotted hole 43. in like manner each bracket 5| rests on the top of a cross member 53, and is held to limited motion on the member 53 by a bolt 54 passing through a slotted hole 55. A lug 44 (Figure 3), formed as a part of the bracket 31, has a threaded hole 46 through which a threaded shaft 47 is screwed. A coupling 48 connects the shaft 41 with the output shaft of a combined gear reducer and motor 49 supported from the member 4|. By rotating the motor shaft in a forward or reverse direction, the bracket 31 may be moved along the member 4| within the limits of the slotted hole 43. Moving the bracket 31 lengthwise of the member 4| (Figure 4), causes the bar 36 and the bracket 5| to move correspondingly.

Each ribbon. after being turned about its turning bar is led about a fixed roller 56 (Figure 2) and a compensating roller 51, that is movably supported on a swingable bracket 58. Each compensating roller, in a known manner, may be adjusted to vary the length of the ribbon running over it. After leaving the compensating roller 51, each ribbon as it passes over a roller BI is scanned in a manner hereinafter described, by a light sensitive scanning head 59 (Figure 3). Thereafter the plurality of ribbons are assembled face to face and led together between cooperating forwarding rollers 62 and 63 (Figures 1 and 2), from which the assembled webs pass over a former 54, between leading-in rollers 66, nipping rollers 51, pulling rollers 68, over a second former 69, between leading-in rollers H, nipping rollers asoaosa l2, and thence to a folder, indicated generally by the numeral 13.

Preferably one of the pairs printing couples will print a line of register marks It in the center of each ribbon formed from the web W by the slitting knives It.

In a known manner, each scanning head 59 will view the series of register marks 75. The scanning head 59 (Figure 3) and associated mechanisms provided for each turning bar may be constructed and connected in accordancewith the arrangement shown in U. S. Cockrell Patent 2,356,567, granted August 22, 1944, although any other suitable device and arrangement may be used. As herein shown, the scanning head as includes a source of light it, a light sensitive device, such as a photoelectric cell ill, a disc l8, carrying a plurality of lenses it, a synchronous motor M for rotating the disc, and motor controlling devices contained within an enclosure 80, which devices may correspond with devices shown and described in the patent hereinbefore mentioned. The scanning head as detects any lateral deviation of the register marks it from a predetermined correct position, and in response to variations in the current passing through the light sensitive device W, the motor 449 is rotated forward or backward to move the turning bar 35 back and forth on the members li and 5d, and thus to automatically adjust the ribbon to maintain the register marks in a predetermined position transversely of the direction of movement of the ribbon. When the several scanning heads 59 (Figures 2 and 4) are adjusted to posi= tion the register marks it, on each of the ribbons directly over one another as the ribbons pass direction, causing the motor to operate in a direcwill remain parallel to the position occupied between the forwarding rollers 52 and 53, the printing will be in accurate lateral register, and

the signatures as delivered will have properly proportioned margins at each side of each page.

When threading ribbons through the printing machine, it is sometimes desirable to manually adjust some of the turning bars 3%. To provide means for such operation, a switch t2 is supplied for each motor at, by means of which it can be disconnected from the automatic control, and connected to an external source of power M. The switch 82 when in the normal position shown by solid lines in Figure 3, connects the brushes of the motor so to a pair of wires to connected to controlling devices in the enclosure as that receive current from a circuit 85. switch in this position, the motor will adjust the position of the turning bars 3% in response to indications receivedby the scanning head 52. If the switch 32, is moved to the left, the motor 39 will be disconnected from the wires 83 and connected to the source of power ed, and the motor 49 will then operate in one direction. If the switch 82 is moved to the right, the motor will be disconnected from the wires 83 and connected to the source or power 3 in the reverse With the before such movement. In other words, each oi the bars is held or carried by a parallel movement device.

It will be understood that the invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore desired that the pres ent embodiment be considered in all respects as illustrative and not restrictive, reference being made to the claim rather than to the foregoing description for an indication of the scope of the invention.

What I claim is: In a printing machine for operating upon a web and having a printing unit for printing register marks longitudinally thereon, a plurality of slitting knives for slitting the web into a plurality of ribbons, turning bars positioned widthwise oi the slit web for deflecting and positioning the ribbons so they may be assembled face to face, a parallel movement device for movably holding each. turning bar, means for assembling the ribbons face to face, including rollers receiv ing the ribbons from theturning bars and lead-1 ing the same to a point of assembly without further turning, a power operated means for adjusting the position of each turning bar, and a control for adjusting the turning bars comprising a scanning head for each ribbon, in position for coacting with the register marks thereof to control the power operated means associated with the turning bar coacting with said ribbon, whereby each ribbon will be positioned in proper trans= verse register.

ADOLPH M. ZUCKERMAN.

REFERENCES CIITEB The following references are of record in the file of this patent:

UNITED STATES PAWS Number Name Date 1,822,902 Osborne Sept. 15, 1931 1,999,618 Raymond Apr. 30, 1935 2,003,568 Wood June 4, 1935 2,136,277 Dean Nov. 8, 1938 2,378,234 Meyer June 12, 19% 

